Remains of American Israeli hostage among 3 bodies returned by Hamas, IDF says

Since the ceasefire went into effect on Oct. 10, 470,000 movements of people have been recorded from southern Gaza to northern Gaza, according to the United Nation's Office for the Coordination of Humanitarian Affairs, U.N. Spokesperson for the Secretary General Stephane Dujarric said on Monday.

"Families are trying to return to their destroyed homes, though many structures are unstable and unexploded ordnance poses a risk. Our partners tell us that water, food and essential services are still desperately needed," Dujarric said during his daily press briefing in New York on Monday.

Between Friday and Saturday, 300 trucks of aid were collected from the Gaza side of the Kerem Shalom/Karem Abu Salem crossing, according to Dujarric.

"The aid in these trucks included thousands of pallets of wheat flour, supplies for hot meals, canned food as well as rice," he said.

Diapers, jerrycans, hundreds of pallets of health supplies including medical equipment and medicine, as well as tarps, tents and winter clothes also entered Gaza, Dujarric noted.

The U.N. Office for Project Services distributed about 329,000 liters of diesel on Sunday, Dujarric added.

More than one million hot meals were delivered as of Sunday, Dujarric said.

Dujarric added that 15 bakeries supported by the U.N. are now operating and producing "thousands" of loaves of bread in Deir al Balah, Khan Younis and Gaza City.

-ABC News' Ellie Kaufman

Hamas announced that the body of a hostage will be handed over to the Red Cross at 9 p.m. local time on Monday.

Two Israeli sources confirmed that the country is preparing to receive the remains of a hostage on Monday evening.

The bodies of 15 hostages have been returned to Israel since the start of the ceasefire on Oct. 10, with 13 bodies remaining in Gaza.

-ABC News' Jordana Miller and Nasser Atta

The International Committee of the Red Cross accompanied Hamas, with permission from Israeli forces, to parts of Gaza past the yellow line on Sunday, the ICRC said. The humanitarian organization did this as Hamas continued their operations in looking for the remaining 13 bodies of hostages still being held in Gaza.

They accompanied Hamas to provide any needed technical guidance, an ICRC official said. ICRC staff were present at a search site in Gaza City on Monday for the same purpose, the official added.

The ICRC does not participate in searching for the deceased or in physical recovery of the remains, the organization said.

"Under international humanitarian law, it is the responsibility of the parties to search for, collect and retrieve human remains," the ICRC said in a statement.

-ABC News' Ellie Kaufman

Egyptian state-linked media confirmed Saturday evening that the country has deployed equipment and a specialized team to the Gaza Strip to help locate and recover the bodies of Israeli hostages who remain missing.

Hamas leader Khalil al-Hayya also confirmed that “new areas will be entered” on Sunday to search for the bodies of the missing hostages, according to a write-up on Hamas’ official website summarizing Al-Hayya’s interview with Al Jazeera on Saturday.

"We will not give the occupation a pretext to resume the war. ... We have no reservations on any national figure residing in Gaza to administer the Gaza Strip. ... Our weapons are linked to the presence of occupation and aggression; if the occupation ends, these weapons will be transferred to the state," al-Hayya added in the Al Jazeera interview.

-ABC News' Ayat Altawy, Nasser Atta, Jordana Miller and Samy Zyara